Need help with Excel 2007 Formula - Many to many update

Posted by Monica on Stack Overflow See other posts from Stack Overflow or by Monica
Published on 2010-04-22T16:51:50Z Indexed on 2010/04/22 16:53 UTC
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I'm experienced with database development, but not so much with Excel. I'm looking for help writing an Excel formula that would help my client's spreadsheet behave like a database. This is what I'm looking to do, but I can't figure out how to write it in Excel 2007:

"If Q4 (on sheet 2) contains A2 (on sheet 1), append A1 (on sheet 1) with Q5 (on sheet 2)"

Some factors:

1) This formula may find multiple instances of A2, so it should not stop after finding the first match

2) The values, as they are created in A1, should be separated with comma and space

3) This is a many to many relationship between Q4 and A2

Thanks for any help with this. I've tried vlookups, match, if statements, but they all fall short in one way or another.

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